package thread;

public class SyncDemo2 {
    public static void main(String[] args) {

        Thread t1 = new Thread(new Runnable() {
            @Override
            public void run() {
                Boo.doSome();
            }
        });

        Thread t2 = new Thread(Boo::doSome);

        Thread t3 = new Thread(() ->{
                Boo.doSome();
        });
        t1.start();
        t2.start();
    }
}
class Boo{
    public static void doSome(){
        synchronized (Boo.class) {
            try {
                Thread t = Thread.currentThread();
                System.out.println(t.getName() + ":正在执行doSome方法");
                Thread.sleep(3000);
                System.out.println(t.getName() + ":执行doSome方法完毕");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}